If you dream of lock jaw, then this denotes anger, frustration, stress, and resentment, that you’ve put a lock on joy. This dream could be suggesting that it is time to be more mindful about your communication patterns.... Strangest Dream Explanations
(Chin; Indignant talk) The lower jaw represents the chief of a group of people who has a large offspring.
If one sees his chin elongated in his dream, it means that he will become reproving of others, and he will gossip in vain. It also means weakness after strength. (Also see Body]; Chin)... Islamic Dream Interpretation
Dreams of lock jaw represent anger or stress clamping your jaw shut, or that you are not trusting your true expression. Your subconscious mind is giving you permission to ask for what you want or need.... Strangest Dream Explanations